Can you try to restart the iOS or Android App? Basically reinstall the App and see if MetaBoot or MetaWear is showing up. Sometimes the App will successfully update the board. The board will get out o

@Laura. No succes had a couple of beers but it's still in MetaBoot. ;-)  Is there a way to reinstall firmware in this mode?

We've seen some issues with DFU so if your board doesn't update, try again. Don't forget that it can take up to 60 seconds for your board to come out of MetaBoot mode. Don't try to reconnect to your n

It can take up to 60 seconds to return to the MetaWear mode from MetaBoot. Basically just let your board chill for a while, grab a beer or soda...then you can connect to your MetaWear again!

@Laura, I have let the batery drain completely. After charging it back up the metawear is still in MetaBoot mode. It does not return to MetaWear status. Any Ideas?

It takes up to 60 seconds for MetaWear to return from MetaBoot mode depending on how large the new firmware file was. Just wait patiently and all will be well again!

I have a similar issue. After performing a firmware update the metawear iOS app no longer detects te board. BLExplr does detect the board but it appears as MetaBoot ins tread of MetaWear.